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What's the use of do while(0) when we define a macro? [duplicate]
I'm reading the linux kernel and I found many macros like this:
2 Answers
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What does the message “rewrite … (90%)” after a Git commit mean? [duplicate]
...ta for files, but I just don't know how much of a rewrite the % represents and it doesn't seem to be in the help page for git help commit .
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Python-equivalent of short-form “if” in C++ [duplicate]
...ython 2.5+), a 1-to-1 equivalent of your version might be:
a = (b == True and "123" or "456" )
... which in python should be shortened to:
a = b is True and "123" or "456"
... or if you simply want to test the truthfulness of b's value in general...
a = b and "123" or "456"
? : can literall...
How should I organize Python source code? [closed]
I'm getting started with Python (it's high time I give it a shot), and I'm looking for some best practices.
2 Answers
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On duplicate key ignore? [duplicate]
I'm trying to finish this query; my tag field is set to UNIQUE and I simply want the database to ignore any duplicate tag.
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php Replacing multiple spaces with a single space [duplicate]
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Use preg_replace() and instead of [ \t\n\r] use \s:
$output = preg_replace('!\s+!', ' ', $input);
From Regular Expression Basic Syntax Reference:
\d, \w and \s
Shorthand character classes matching
digits, word characters (letters,...
python ? (conditional/ternary) operator for assignments [duplicate]
C and many other languages have a conditional (aka ternary) operator. This allows you to make very terse choices between two values based on the truth of a condition, which makes expressions, including assignments, very concise.
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“Collection was mutated while being enumerated” on executeFetchRequest
I'm stuck on a problem for hours now and having read everything about this on stackoverflow (and apply every advices found), I'm now officially in need for help. ;o)
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Locate Git installation folder on Mac OS X
...git version in /usr/bin. To ensure you can easily upgrade from the website and use the latest git version, edit either your profile information to place /usr/local/git/bin before /usr/bin in the $PATH or edit /etc/paths and insert /usr/local/git/bin as the first entry (see this answer).
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Get boolean from database using Android and SQLite
How can I obtain the value of a boolean field in an SQLite database on Android?
10 Answers
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